803
Appendix H
TCP Status Transitions
Number
Status
Meaning
00000000
CLOSED
Connection closed.
00000001
LISTEN
Waiting for connection.
00000002
SYN SENT
SYN sent in active status.
00000003
SYN RECEIVED
SYN received and sent.
00000004
ESTABLISHED
Already established.
00000005
CLOSE WAIT
FIN received and waiting for completion.
00000006
FIN WAIT 1
Completed and FIN sent.
00000007
CLOSING
Completed and exchanged FIN. Awaiting ACK.
00000008
LAST ACK
FIN sent and completed. Awaiting ACK.
00000009
FIN WAIT 2
Completed and ACK received. Awaiting FIN.
0000000A
TIME WAIT
After closing, pauses twice the maximum segment life (2MSL).
rcv FIN
snd ACK
CLOSE
rcv ACK of FIN
rcv ACK of SYN
CLOSED
LISTEN
SYN
RECEIVED
SYN
SENT
ESTABLISHED
CLOSING
CLOSED
WAIT
CLOSED
snd SYN, ACK
Passive OPEN
CLOSE
ACTIVE OPEN
snd SYN
snd SYN
SEND
CLOSE
rcv SYN
snd ACK
rcv SYN, ACK
snd ACK
snd FIN
CLOSE
snd ACK
rcv FIN
rcv ACK of FIN
snd FIN
rcv FIN
rcv ACK of FIN
Timeout=2MSL
LAST-ACK
CLOSE
snd FIN
TIME WAIT
FIN
WAIT-1
FIN WAIT-2
rcv SYN
snd ACK
Summary of Contents for CP1L-EL20DR-D
Page 3: ...CP1L EL20D CP1L EM30D CP1L EM40D CP1L EL EM CPU Unit Operation Manual Produced July 2017...
Page 4: ...iv...
Page 10: ...x...
Page 22: ...xxii...
Page 34: ...xxxiv Software Licenses and Copyrights 7...
Page 192: ...158 Trial Operation and Debugging Section 5 3...
Page 250: ...216 Automatic Clock Adjustment and Specifying Servers by Host Name Section 6 7...
Page 666: ...632 Trouble Shooting Section 11 7...
Page 696: ...662 Standard Models Appendix A...
Page 805: ...771 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Page 806: ...772 Connections to Serial Communications Option Boards Appendix F...
Page 836: ...802 PLC Setup Appendix G...
Page 838: ...804 TCP Status Transitions Appendix H...
Page 840: ...806 Ethernet Network Parameters Appendix I...
Page 842: ...808 Buffer Configuration CP1L EL EM Appendix J...
Page 844: ...810 Ethernet Specifications Appendix K...
Page 851: ...Index 817 work words 118 write protection 447...
Page 852: ...818 Index...
Page 854: ...820 Revision History...
Page 855: ......